/[MITgcm]/MITgcm_contrib/high_res_cube/eddy_flux/calcUVBave.m
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Contents of /MITgcm_contrib/high_res_cube/eddy_flux/calcUVBave.m

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Revision 1.4 - (show annotations) (download)
Thu Aug 12 18:12:02 2004 UTC (20 years, 11 months ago) by edhill
Branch: MAIN
Changes since 1.3: +100 -49 lines
 o updated to handle all combos of [UV][TSB] products

1 function m = calcUVBave(Spat, Tpat, Upat, Vpat, ilist, nlay, ne)
2
3 % Function m = calcTBave(Spat, Tpat, Upat, Vpat, ilist, nlay, ne)
4 %
5 %
6 % INPUTS
7 % Tpat string containing T-data file pattern
8 % Upat string containing U-data file pattern
9 % Vpat string containing V-data file pattern
10 % ilist list of iteration values
11 % nlay number of z layers
12 % ne number of values alone each edge of each face
13 %
14 % OUTPUTS
15 % m output array of dimension ns*nps
16
17 if nargin ~= 7
18 disp('Error: wrong number of arguments')
19 exit
20 end
21
22 deltatT = 1200; % model time step size (s)
23 tavefreq = 259200; % averaging period (s)
24 startDate = datenum(1992,1,1); % model integration starting date
25
26 oldyear = -1;
27 newyear = oldyear;
28
29 nps = 6 * ne*ne;
30 tx = 85;
31 ty = 85;
32 nt = ne*ne*6/(tx*ty);
33 cx = ne;
34 cy = ne;
35 nz = 1;
36
37 delR = [
38 10.00, 10.00, 10.00, 10.00, 10.00, 10.00, 10.00, 10.01, ...
39 10.03, 10.11, 10.32, 10.80, 11.76, 13.42, 16.04 , 19.82, 24.85, ...
40 31.10, 38.42, 46.50, 55.00, 63.50, 71.58, 78.90, 85.15, 90.18, ...
41 93.96, 96.58, 98.25, 99.25,100.01,101.33,104.56,111.33,122.83, ...
42 139.09,158.94,180.83,203.55,226.50,249.50,272.50,295.50,318.50, ...
43 341.50,364.50,387.50,410.50,433.50,456.50 ];
44 R = cumsum(delR) - 0.5*delR;
45
46 vnam = [ 'U_'; 'V_'; 'T_'; 'S_'; 'B_'; 'B1'; ...
47 'UT'; 'VT'; 'US'; 'VS'; 'UB'; 'VB' ];
48
49 il = 1;
50 for il = 1:nlay
51
52 % a = sprintf('Slice: %g',il);
53 % disp(a);
54
55 % Zero the accumulators
56 for io = 1:size(vnam,1)
57 comm = sprintf('%s_acc = zeros(ne,ne,6);', vnam(io,:));
58 eval(comm)
59 end
60
61 it = 1;
62 for it = 1:length(ilist)
63
64 iter = ilist(it);
65 str = datestr(startDate + (iter*deltatT-tavefreq/2)/60/60/24);
66 dv = datevec(startDate + (iter*deltatT-tavefreq/2)/60/60/24);
67 newyear = dv(1);
68
69 sfname = sprintf(Spat, ilist(it));
70 tfname = sprintf(Tpat, ilist(it));
71 ufname = sprintf(Upat, ilist(it));
72 vfname = sprintf(Vpat, ilist(it));
73 disp([ a ' ' str ' ' tfname ]);
74 sfid = fopen(sfname, 'r', 'ieee-be');
75 tfid = fopen(tfname, 'r', 'ieee-be');
76 ufid = fopen(ufname, 'r', 'ieee-be');
77 vfid = fopen(vfname, 'r', 'ieee-be');
78 offset = (il - 1)*nps*4;
79
80 % Convert the horrible JPL mdsio layout to six sane faces
81 fseek(sfid, offset, 'bof');
82 scube = unmangleJPL1( reshape(fread(sfid, nps, 'real*4'),tx*nt,ty), ...
83 ne, tx );
84
85 fseek(tfid, offset, 'bof');
86 tcube = unmangleJPL1( reshape(fread(tfid, nps, 'real*4'),tx*nt,ty), ...
87 ne, tx );
88
89 fseek(ufid, offset, 'bof');
90 ucube = unmangleJPL1( reshape(fread(ufid, nps, 'real*4'),tx*nt,ty), ...
91 ne, tx );
92
93 fseek(vfid, offset, 'bof');
94 vcube = unmangleJPL1( reshape(fread(vfid, nps, 'real*4'),tx*nt,ty), ...
95 ne, tx );
96
97 fclose(sfid);
98 fclose(tfid);
99 fclose(ufid);
100 fclose(vfid);
101
102 % Compute the density
103 bcube = zeros(size(scube));
104 bcubem1 = zeros(size(scube));
105 for icf = 1:6
106 % pressure_for_eos.F :
107 % locPres(i,j) = -rhoConst*rC(k)*gravity*maskC(i,j,k,bi,bj)
108 % rhoConst = 9.997999999999999E+02 /* Ref density ( kg/m^3 ) */
109 % gravity = 9.810000000000000E+00 /* Grav accel ( m/s^2 ) */
110 p = 0.09998 * 9.81 * R(il);
111 bcube(:,:,icf) = ...
112 eh3densjmd95( squeeze(scube(:,:,icf)), ...
113 squeeze(tcube(:,:,icf)), p ) * -9.81 / 1000;
114 if il > 1
115 p = 0.09998 * 9.81 * R(il-1);
116 bcubem1(:,:,icf) = ...
117 eh3densjmd95( scube(:,:,icf), ...
118 tcube(:,:,icf), p ) * -9.81 / 1000;
119 end
120 end
121 tmask = double(tcube ~= 0.0);
122 scube = scube .* tmask;
123 bcube = bcube .* tmask;
124 bcubem1 = bcubem1 .* tmask;
125
126 % Fill the (ne+1)*(ne+1) grid with T,S,B values
127 ni = ne; nip1 = ni + 1;
128 nj = ne; njp1 = nj + 1;
129 tcubep1 = zeros( [ nip1 njp1 6 ] );
130 scubep1 = zeros( [ nip1 njp1 6 ] );
131 bcubep1 = zeros( [ nip1 njp1 6 ] );
132 for icf = 1:6
133 tcubep1(2:nip1,2:njp1,icf) = tcube(:,:,icf);
134 scubep1(2:nip1,2:njp1,icf) = scube(:,:,icf);
135 bcubep1(2:nip1,2:njp1,icf) = bcube(:,:,icf);
136 end
137
138 % Do the upwind-edge T exchanges
139 tcubep1(1,2:njp1,1) = tcube(ni:-1:1,nj,5); % -
140 tcubep1(2:nip1,1,1) = tcube(1:ni,nj,6); % -
141 tcubep1(1,2:njp1,2) = tcube(ni,1:nj,1); % -
142 tcubep1(2:nip1,1,2) = tcube(ni,nj:-1:1,6); % -
143 tcubep1(1,2:njp1,3) = tcube(ni:-1:1,nj,1); % -
144 tcubep1(2:nip1,1,3) = tcube(1:ni,nj,2); % -
145 tcubep1(1,2:njp1,4) = tcube(ni,1:nj,3); % -
146 tcubep1(2:nip1,1,4) = tcube(ni,nj:-1:1,2); % -
147 tcubep1(1,2:njp1,5) = tcube(ni:-1:1,nj,3); % -
148 tcubep1(2:nip1,1,5) = tcube(1:ni,nj,4); % -
149 tcubep1(1,2:njp1,6) = tcube(ni,1:nj,5); % -
150 tcubep1(2:nip1,1,6) = tcube(ni,nj:-1:1,4); % -
151
152 % Do the upwind-edge S exchanges
153 scubep1(1,2:njp1,1) = scube(ni:-1:1,nj,5); % -
154 scubep1(2:nip1,1,1) = scube(1:ni,nj,6); % -
155 scubep1(1,2:njp1,2) = scube(ni,1:nj,1); % -
156 scubep1(2:nip1,1,2) = scube(ni,nj:-1:1,6); % -
157 scubep1(1,2:njp1,3) = scube(ni:-1:1,nj,1); % -
158 scubep1(2:nip1,1,3) = scube(1:ni,nj,2); % -
159 scubep1(1,2:njp1,4) = scube(ni,1:nj,3); % -
160 scubep1(2:nip1,1,4) = scube(ni,nj:-1:1,2); % -
161 scubep1(1,2:njp1,5) = scube(ni:-1:1,nj,3); % -
162 scubep1(2:nip1,1,5) = scube(1:ni,nj,4); % -
163 scubep1(1,2:njp1,6) = scube(ni,1:nj,5); % -
164 scubep1(2:nip1,1,6) = scube(ni,nj:-1:1,4); % -
165
166 % Do the upwind-edge B exchanges
167 bcubep1(1,2:njp1,1) = bcube(ni:-1:1,nj,5); % -
168 bcubep1(2:nip1,1,1) = bcube(1:ni,nj,6); % -
169 bcubep1(1,2:njp1,2) = bcube(ni,1:nj,1); % -
170 bcubep1(2:nip1,1,2) = bcube(ni,nj:-1:1,6); % -
171 bcubep1(1,2:njp1,3) = bcube(ni:-1:1,nj,1); % -
172 bcubep1(2:nip1,1,3) = bcube(1:ni,nj,2); % -
173 bcubep1(1,2:njp1,4) = bcube(ni,1:nj,3); % -
174 bcubep1(2:nip1,1,4) = bcube(ni,nj:-1:1,2); % -
175 bcubep1(1,2:njp1,5) = bcube(ni:-1:1,nj,3); % -
176 bcubep1(2:nip1,1,5) = bcube(1:ni,nj,4); % -
177 bcubep1(1,2:njp1,6) = bcube(ni,1:nj,5); % -
178 bcubep1(2:nip1,1,6) = bcube(ni,nj:-1:1,4); % -
179
180 % Get T values on the U,V grid points
181 masku = 1.0 - abs(diff(double(tcubep1(2:nip1,:,:) == 0.0),1,2));
182 maskv = 1.0 - abs(diff(double(tcubep1(:,2:nip1,:) == 0.0),1,1));
183 diffu = 0.5*diff(tcubep1(2:nip1,:,:),1,2);
184 diffv = 0.5*diff(tcubep1(:,2:nip1,:),1,1);
185 tonu = tcube(:,:,:) + masku.*diffu;
186 tonv = tcube(:,:,:) + maskv.*diffv;
187
188 % Get S values on the U,V grid points
189 diffu = 0.5*diff(scubep1(2:nip1,:,:),1,2);
190 diffv = 0.5*diff(scubep1(:,2:nip1,:),1,1);
191 sonu = scube(:,:,:) + masku.*diffu;
192 sonv = scube(:,:,:) + maskv.*diffv;
193
194 % Get B values on the U grid points
195 diffu = 0.5*diff(bcubep1(2:nip1,:,:),1,2);
196 diffv = 0.5*diff(bcubep1(:,2:nip1,:),1,1);
197 bonu = bcube(:,:,:) + masku.*diffu;
198 bonv = bcube(:,:,:) + maskv.*diffv;
199
200 if ((newyear ~= oldyear) && (nm > 0)) || (it == length(ilist))
201
202 % Write if its a new year or the last of all entries
203 disp([' ==> Writing files for ==> ' sprintf('%d',oldyear)]);
204 for io = 1:size(vnam,1)
205 comm = sprintf( ...
206 '%s_ido = fopen(''%s_tave_%d'', ''a'', ''ieee-be'');', ...
207 vnam(io,:), vnam(io,:), oldyear );
208 eval(comm)
209 comm = sprintf( '%s_acc = %s_acc ./ nm;',vnam(io,:), ...
210 vnam(io,:));
211 eval(comm)
212 comm = sprintf('fwrite(%s_ido, %s_acc, ''real*4'');', ...
213 vnam(io,:), vnam(io,:) );
214 eval(comm)
215 comm = sprintf( 'fclose(%s_ido);', vnam(io,:) );
216 eval(comm)
217
218 % Re-zero the accumulators
219 comm = sprintf('%s_acc = zeros(ne,ne,6);', vnam(io,:));
220 eval(comm)
221 end
222
223 nm = 0;
224
225 end
226
227 % Accumulate partial sums
228 U__acc = U__acc + ucube;
229 V__acc = V__acc + vcube;
230 T__acc = T__acc + tcube;
231 S__acc = S__acc + scube;
232 B__acc = B__acc + bcube;
233 B1_acc = B1_acc + bcubem1;
234
235 UT_acc = UT_acc + tonu.*ucube;
236 VT_acc = VT_acc + tonv.*vcube;
237 US_acc = US_acc + sonu.*ucube;
238 VS_acc = VS_acc + sonv.*vcube;
239 UB_acc = UB_acc + bonu.*ucube;
240 VB_acc = VB_acc + bonv.*vcube;
241
242 nm = nm + 1;
243
244 oldyear = newyear;
245
246 end
247 end
248

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